HomeRulebook HomeBalancing and Settlement CodeInterface Definition DocumentsNeta Interface Definition and Design Document ...Neta Interface Definition and Design Document ... V 59 0
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CONTENTS

  • 1 Introduction
    • 1.1 Purpose
      • 1.1.1 Summary
    • 1.2 Scope
      • 1.2.1 The Scope of this Document
      • 1.2.2 Types of Interface
    • 1.3 NETA Interface Overview
      • 1.3.1 Introduction
      • 1.3.2 The Business Process Level
      • 1.3.3 Logical Message Definition
      • 1.3.4 Physical Message Definition
      • 1.3.5 Data Transfer Protocols
    • 1.4 Summary
    • 1.5 References
      • 1.5.1 BSC Documents
    • 1.6 Abbreviations
  • 2 Common Interface Conventions
    • 2.1 Interface Mechanisms
      • 2.1.1 Manual
      • 2.1.2 Electronic Data File Transfer
      • 2.1.3 Meter System Interface
      • 2.1.4 BMRA Publishing Interface
    • 2.2 Data File Format
      • 2.2.1 File Header
      • 2.2.2 File Footer
      • 2.2.3 Record Formats
      • 2.2.4 File Types, Record Types and Repeating Structure
      • 2.2.5 File names
      • 2.2.6 Unstructured File Format
      • 2.2.7 Response Messages
      • 2.2.8 Use of Sequence Numbers
      • 2.2.9 Time
      • 2.2.10 The CRA Encryption Key
      • 2.2.11 Valid Sets
      • 2.2.12 Example File Formats
  • 3 External Interface Summary
    • 3.1 Interfaces by BSC Agent
      • 3.1.1 BMRA Interfaces
      • 3.1.2 CDCA Interfaces
      • 3.1.3 CRA Interfaces
      • 3.1.4 ECVAA Interfaces
      • 3.1.5 SAA Interfaces
      • 3.1.6 SVAA Interfaces
    • 3.2 Interfaces by Corresponding Party
      • 3.2.1 BSC Party Interfaces
      • 3.2.2 BSC Party Agent Interfaces
      • 3.2.3 Market Index Data Provider Interfaces
  • 4 BMRA External Inputs and Outputs
    • 4.1 BMRA-I004: (output) Publish Balancing Mechanism Data
      • 4.1.1 Gate Closure Data
      • 4.1.2 Acceptance and Balancing Services Data
      • 4.1.3 Declaration Data
    • 4.2 BMRA-I005: (output) Publish System Related Data
    • 4.3 BMRA-I006: (output) Publish Derived Data
      • 4.3.1 Indicative System Price Stack Data
    • 4.4 BMRA-I019: (output) Publish Credit Default Notices
    • 4.5 BMRA-I010: (output) BMRA Data Exception Reports
    • 4.6 BMRA-I015: (input) Receive Market Index Data
    • 4.7 BMRA-I028: (input) Receive REMIT Data
    • 4.8 BMRA-I030: (output) Publish REMIT Data
    • 4.9 BMRA-I031: (output) Publish Transparency Regulation Data
    • 4.10 BMRA-I035: (output) Publish Trading Unit Data
    • 4.11 BMRA-I037: (output) Publish Replacement Reserve Data
    • 4.12 BMRA-I038: (input) Receive Regional Demand Forecast and Restoration Data
    • 4.13 BMRA-I039: (output) Publish Regional Demand Forecast and Restoration Data
    • 4.14 BMRA-I039: (output) Publish Exempt Supply Volume Data
    • 4.15 BMRA TIBCO Message Publishing - Data Formats
      • 4.15.1 Message Types
      • 4.15.2 Message Subject Naming
      • 4.15.3 Message Formats
      • 4.15.4 Field Type Definitions
      • 4.15.5 Message Definitions
      • 4.15.6 Format of Data within TIB Messages
      • 4.15.7 Writing an Application that Subscribes to TIB Messages
    • 4.16 NOT USED
  • 5 CDCA External Inputs and Outputs
    • 5.1 CDCA Flow Overview
    • 5.2 CDCA-I001: (input) Aggregation rules
    • 5.3 CDCA-I003: (input) Meter technical data
    • 5.4 CDCA-I004: (output) Notify New Meter Protocol
    • 5.5 CDCA-I005: (input) Load New Meter Protocol
    • 5.6 CDCA-I006: (output) Meter Data for Proving Test
    • 5.7 CDCA-I007: (output) Proving Test Report/Exceptions
    • 5.8 CDCA-I008: (input) Obtain metered data from metering systems
    • 5.9 CDCA-I009: (input) Meter Period Data Collected via Site Visit
    • 5.10 CDCA-I010: (output) Exception report for missing and invalid meter period data
    • 5.11 CDCA-I011: (input) Dial Readings from meter, for MAR
    • 5.12 CDCA-I012: (output) Report Raw meter Data
    • 5.13 CDCA-I013: (input) Response to Estimated data
    • 5.14 CDCA-I014: (output) Estimated Data Report
    • 5.15 CDCA-I015: (input) Reporting metering system faults
    • 5.16 CDCA-I017: (output) Meter Reading Schedule for MAR
    • 5.17 CDCA-I018: (output) MAR Reconciliation Report
    • 5.18 CDCA-I019: (output) MAR Remedial Action Report
    • 5.19 CDCA-I021: (input) Notification of Metering Equipment Work
    • 5.20 CDCA-I022: (input) Distribution Line Loss Factors
    • 5.21 CDCA-I023: (output) Missing Line Loss Factors
    • 5.22 CDCA-I025: (output) Aggregation Rules Exceptions
    • 5.23 CDCA-I026: (output) Aggregated Meter Volume Exceptions
    • 5.24 CDCA-I029: (output) Aggregated GSP Group Take Volumes
    • 5.25 CDCA-I030: (output) Meter Period Data for Distribution Area
    • 5.26 CDCA-I033: File Receipt Acknowledgement
    • 5.27 CDCA-I037: (output) Estimated Data Notification
    • 5.28 CDCA-I038: (output) Reporting metering system faults
    • 5.29 CDCA-I041: (output) Interconnector Aggregation Report
    • 5.30 CDCA-I042: (output) BM Unit Aggregation Report
    • 5.31 CDCA-I044: (input) Meter System Proving Validation
    • 5.32 CDCA-I045: (input) Meter Data from routine work and Metering Faults
    • 5.33 CDCA-I046: (output) Site Visit Inspection Report
    • 5.34 CDCA-I047: (output) Correspondence Receipt Acknowledgement
    • 5.35 CDCA-I048: (output) Report of Aggregation Rules
    • 5.36 CDCA-I051: (output) Report Meter Technical Details
    • 5.37 CDCA-I054:(output) Meter Status Report
    • 5.38 CDCA-I055: (input) Transfer from SMRS information
    • 5.39 CDCA-I057: (input) Transfer to SMRS information
    • 5.40 CDCA-I059: (output) Initial Meter Reading Report
    • 5.41 CDCA-I060: (input) SVA Party Agent Details
    • 5.42 CDCA-I067: (input) Disconnected BM Units
  • 6 CRA External Inputs and Outputs
    • 6.1 CRA Flow Overview
    • 6.2 CRA-I001: (input) BSC Party Registration Data
    • 6.3 CRA-I002: (input) Interconnector Administrator Registration Data
    • 6.4 CRA-I003: (input) BSC Party Agent Registration Data
    • 6.5 CRA-I005: (input) BM Unit Registration Data
    • 6.6 CRA-I006: (input) Trading Unit Registration
    • 6.7 CRA-I007: (input/output) Boundary Point and System Connection Point Data
    • 6.8 CRA-I008: (input) Interconnector Registration Details
    • 6.9 CRA-I012: (output) CRA Encryption Key
    • 6.10 CRA-I014: (output) Registration Report
    • 6.11 CRA-I021: (output) Registered Service List
    • 6.12 CRA-I024: (output) Certification and Accreditation Status Report
    • 6.13 CRA-I025: Receive Acknowledgement
    • 6.14 CRA-I026: Issue Acknowledgement
    • 6.15 CRA-I027: (input) GSP Group and GSP Registration
    • 6.16 CRA-I031: (input) Metering System Data
    • 6.17 CRA-I034: (input) Flexible Reporting Request
    • 6.18 CRA-I038: Transfer from SMRS information
    • 6.19 CRA-I040: Transfer to SMRS information
    • 6.20 CRA-I048: GC or DC Breach Notification
    • 6.21 CRA-I049: GC or DC Breach Estimation Challenge
    • 6.22 CRA-I051: Notification of Breach Challenge Data
  • 7 ECVAA External Inputs and Outputs
    • 7.1 ECVAA Flow Overview
    • 7.2 ECVAA-I002: (input) ECVNAA Data
    • 7.3 ECVAA-I003: (input) MVRNAA Data
    • 7.4 ECVAA-I004: (input) ECVN
    • 7.5 ECVAA-I005: (input) MVRN
    • 7.6 ECVAA-I007: (output) ECVNAA Feedback
    • 7.7 ECVAA-I008: (output) MVRNAA Feedback
    • 7.8 ECVAA-I009: (output) ECVN Feedback (Rejection)
    • 7.9 ECVAA-I010: (output) MVRN Feedback (Rejection)
    • 7.10 ECVAA-I013: (output) Authorisation Report
    • 7.11 ECVAA-I014: (output) Notification Report
    • 7.12 ECVAA-I018: Receive Acknowledgement
    • 7.13 ECVAA-I019: Issue Acknowledgement
    • 7.14 ECVAA-I022: (output) Forward Contract Report
    • 7.15 ECVAA-I024: (input) Credit Cover Minimum Eligible Amount Request
    • 7.16 ECVAA-I025: (output) Credit Cover Minimum Eligible Amount Report
    • 7.17 ECVAA-I028: (output) ECVN Acceptance Feedback
    • 7.18 ECVAA-I029: (output) MVRN Acceptance Feedback
    • 7.19 Forward Contract Report Start Period Override
    • 7.20 ECVAA-I021: (output) Credit Limit Warning
    • 7.21 ECVAA-I037: (input) Receive Volume Notification Nullification Request
    • 7.22 ECVAA-I038: (output) Issue Volume Notification Nullification Confirmation Report
    • 7.23 ECVAA-I039: (output) Issue Nullification Completion Report
    • 7.24 Additional Clarification on ECVAA Interfaces
      • 7.24.1 Sign Convention
      • 7.24.2 Notes on functionality
      • 7.24.3 Notes on Notification Processing and Reporting
    • 7.25 ECVAA-I042: Banning/Unbannimg Individual User Access to the ECVAA Web Service
    • 7.26 ECVAA-I043: ECVAA Web Service – BSC Party View ECVNs
    • 7.27 ECVAA-I044: ECVAA Web Service – BSC Party View MVRNs
    • 7.28 7ECVAA-I045: ECVAA Web Service – ECVNA View ECVNs.
    • 7.29 ECVAA-I046: ECVAA Web Service – MVRNA View MVRNs.
    • 7.30 ECVAA-I051: Wholesale Market Activity Notification
    • 7.31 ECVAA-I052: Wholesale Market Activity Notification Exception Report
  • 8 SAA External Inputs and Outputs
    • 8.1 SAA Flow Overview
    • 8.2 SAA-I006: (input) BM Unit Metered Volumes for Interconnector Users
    • 8.3 SAA-I012: (input) Dispute Notification
    • 8.4 SAA-I014: (output) Settlement Reports
      • 8.4.1 Aggregate Party Day Charges
      • 8.4.2 Aggregate VLP Day Charges22
      • 8.4.3 Aggregate Party Period Charges
      • 8.4.4 Aggregate VLP Period Charges23
      • 8.4.5 System Period Data
      • 8.4.6 VLP24 System Period Data
      • 8.4.7 System Quarter Hour Data (following the TERRE P344 Final Implementation Date)
      • 8.4.8 Account Period Data
      • 8.4.9 Virtual Balancing Account Period Data
      • 8.4.10 Account Period BMU Data
      • 8.4.11 BM Unit Period Data
      • 8.4.12 Secondary BM Unit Period Data
      • 8.4.13 BM Unit Period RR Data
      • 8.4.14 BM Unit Quarter Hour RR Data
      • 8.4.15 Replacement Reserve Bid
      • 8.4.16 RR Auction Period
      • 8.4.17 RR Auction Point
      • 8.4.18 RR Activation
      • 8.4.19 RR Activation Point
      • 8.4.20 Bid-Offer Data
      • 8.4.21 MVR Data
      • 8.4.22 Market Index Data
      • 8.4.23 Balancing Services Adjustment Action Data
      • 8.4.24 BM Unit Bid-Offer Pair Acceptance Volume Data
    • 8.5 SAA-I016: (output) Settlement Calendar
    • 8.6 SAA-I017: (output) SAA Data Exception Report
    • 8.7 SAA-I018: (output) Dispute Reports
    • 8.8 SAA-I021: Receive Acknowledgement of SAA Messages
    • 8.9 SAA-I022: Issue SAA Acknowledgement of Messages
    • 8.10 SAA-I030: (input) Receive Market Index Data
    • 8.11 SAA-I058: (output) Aggregated Non-Chargeable Demand Report
    • 8.12 SAA-I061: (input) BM Unit Eligible Exempt Supply
  • 9 SVAA External Inputs and Outputs
    • 9.1 P0282: Delivered Volume Notification
    • 9.2 P0283: Rejection of Delivered Volume Notification
    • 9.3 P0284: Confirmation of Delivered Volume
    • 9.4 P0285: Delivered Volume Exception Report
    • 9.5 P0287: Metering System Half Hourly Volume Adjustments
    • 9.6 P0288: Secondary Half Hourly Consumption Volumes
    • 9.7 P0297: Asset Registration
    • 9.8 P0298: Rejection of Asset Registration
    • 9.9 P0299: Confirmation of Asset Registration
    • 9.10 P0300: Registration of Asset Metering Agents
    • 9.11 P0301: Rejection of Asset Metering Agents
    • 9.12 P0302: Confirmation of Registration of Asset Metering Agents
    • 9.13 P0303: Asset Meter Registration
    • 9.14 P0304: Rejection of Asset Meter Registration
    • 9.15 P0305: Confirmation of Asset Meter Registration
    • 9.16 P0306: AMSID Pair Allocation to a Secondary BM Unit
    • 9.17 P0307: Confirmation of AMSID Pair Allocation to a Secondary BM Unit
    • 9.18 P0308: Rejection of AMSID Pair Allocation to a Secondary BM Unit
    • 9.19 P0309: Notification of use of AMSID Pair by another AMVLP
    • 9.20 P0310: Missing Metering System Data
    • 9.21 P0311: Invalid Metering System Data
    • 9.22 P0320: Loss of AMSID Pair Allocation
    • 9.23 P0323: BM Unit Allocation Event Day
    • 9.24 P0324: Rejection of BM Unit Allocation Event Day
    • 9.25 P0325: Confirmation of BM Unit Allocation Event Day
    • 9.26 P0326: BM Unit Allocation Baselining Detail
    • 9.27 P0327: Rejection of BM Unit Allocation Baselining Detail
    • 9.28 P0334: Confirmation of BM Unit Allocation Baselining Detail
    • 9.29 P0328: BM Unit Submitted Expected Volume Notification
    • 9.30 P0329: BM Unit Submitted Expected Volume Rejection
    • 9.31 P0330: BM Unit Submitted Expected Volume Acceptance
    • 9.32 P0331: BM Unit Submitted Expected Volume Warning
    • 9.33 P0333: Baselining Expected Volume Report
    • 9.34 P0335: BM Unit Baselining Status
    • 9.35 P0336: Rejection of BM Unit Baselining Status
    • 9.36 P0337: Confirmation of BM Unit Baselining Status

NETA Interface Definition and Design Document Part 1 – Interfaces with BSC Parties and their Agents V59.0

Effective From Date:26/06/2025
Status:SUPERSEDED
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